大约有 9,000 项符合查询结果（耗时：0.0329秒） [XML]
Set the value of a variable with the result of a command in a Windows batch file
...re's how I do it when I need a database query's results in my batch file:
sqlplus -S schema/schema@db @query.sql> __query.tmp
set /p result=<__query.tmp
del __query.tmp
The key is in line 2: "set /p" sets the value of "result" to the value of the first line (only) in "__query.tmp" via the "...
代码块超过1.2w编译apk报错问题 - App Inventor 2 中文网 - 清泛IT社区，为创新赋能！
...淆，或者规则放开（验证过，没用，还是一样报错）
不使用d8，用老版本的dex试试（不好恢复老版本不验证了）
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怀疑 kawa Scheme 生成问题，更新新版本试试。（也不容易更新）
https://community.appinventor.mi ... or-d8-failed/...
What is the dual table in Oracle?
...esults, such as sysdate. Also helps you to check if Oracle is up and check sql syntax, etc.
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How can I check whether a option already exist in select by JQuery
...o input sanitization, and you end up with code practices that have haunted SQL for decades. So a -1 is completely unwarranted. The question even states that they want to insert values "dynamically". Don't patch your string together dynamically. You also don't do 'select 1 from users where password="...
Pandas count(distinct) equivalent
...am using pandas as a db substitute as I have multiple databases (oracle, mssql, etc) and I am unable to make a sequence of commands to a SQL equivalent.
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How to reset a single table in rails?
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To reset the index/primary key in SQLite just type:
$ rails console
> ActiveRecord::Base.connection.execute("DELETE from sqlite_sequence where name = 'yourtablename'")
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PostgreSQL query to list all table names?
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Documentation says only the current one: postgresql.org/docs/9.5/static/infoschema-tables.html "table_catalog sql_identifier Name of the database that contains the table (always the current database)"
– sudo
Sep 10 '16 at 5:53
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MySQL Orderby a number, Nulls last
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MySQL has an undocumented syntax to sort nulls last. Place a minus sign (-) before the column name and switch the ASC to DESC:
SELECT * FROM tablename WHERE visible=1 ORDER BY -position DESC, id DESC
It is essentially the i...
How to get database structure in MySQL via query
Is it possible to somehow get structure of MySQL database, or just some table with simple query?
10 Answers
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Difference between two dates in MySQL
... the time value can range from "-838:59:59" to "838:59:59". w3schools.com/SQl/func_mysql_timediff.asp
– cREcker
Aug 3 '17 at 12:21
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